n=140;
grades=[|79,74,31|
92,91,57|
46,76,84|
43,54,43|
75,83,93|
86,51,48|
68,35,34|
78,69,78|
77,40,53|
91,93,58|
88,57,89|
77,53,42|
93,52,63|
77,43,55|
85,92,55|
60,34,32|
79,41,50|
38,76,60|
87,43,39|
88,67,66|
40,55,60|
60,50,96|
63,54,99|
93,48,56|
72,68,51|
40,41,60|
56,61,73|
55,83,98|
75,62,95|
31,80,77|
62,56,74|
91,71,39|
99,92,58|
91,30,85|
30,84,39|
72,70,40|
84,94,73|
96,71,56|
77,87,84|
78,55,42|
81,38,33|
89,60,96|
70,87,40|
36,69,72|
72,45,40|
89,44,66|
85,63,76|
77,74,53|
65,92,48|
44,74,81|
66,69,79|
82,85,81|
58,44,81|
83,49,51|
96,88,45|
39,40,59|
64,64,81|
41,36,43|
46,50,63|
80,49,38|
66,89,93|
97,64,52|
78,46,46|
97,60,36|
40,61,36|
44,36,37|
64,48,98|
87,77,69|
37,71,52|
61,96,91|
30,94,69|
96,32,37|
43,80,52|
96,53,39|
35,92,87|
70,33,88|
45,58,80|
33,95,99|
60,66,66|
75,85,52|
72,63,49|
59,75,71|
61,72,44|
30,81,91|
93,55,35|
39,75,94|
58,43,56|
92,57,53|
91,74,55|
46,96,86|
73,52,61|
88,60,85|
62,31,80|
98,46,57|
69,62,97|
93,92,76|
47,89,48|
41,39,40|
37,71,75|
68,51,52|
84,40,82|
85,80,57|
55,75,61|
36,61,76|
44,47,94|
66,50,76|
31,50,67|
92,51,35|
89,55,62|
45,53,77|
79,88,41|
59,43,95|
99,84,63|
98,89,54|
50,99,56|
37,66,48|
59,46,98|
79,77,82|
77,73,74|
59,39,65|
52,38,63|
42,34,31|
99,95,35|
83,81,43|
78,30,93|
44,49,75|
67,55,79|
88,52,63|
41,47,38|
93,59,87|
85,74,48|
40,37,44|
44,32,44|
86,35,46|
72,37,83|
92,98,62|
79,79,79|
87,49,56|
73,39,80|
59,90,61|];